CVE-2026-90449: Cisa Malcolm

Medium severity, CVSS 6.5. EPSS: 0.2% chance of exploitation in the next 30 days.

When a particular authentication mode is configured, the reverse proxy forwards requests for a bundled third-party administrative interface directly to that interface without applying the gateway's own authentication requirement first. All access control for this administrative interface, which manages the credential store used to gate every other service in the deployment, is delegated entirely to that third-party interface's own login mechanism. Any authentication weakness in that bundled interface would compromise the credential store protecting the rest of the deployment.

Affected products

• Cisa Malcolm: before v26.06.0 (fixed in v26.06.0)

Published 2026-09-11. Last modified 2026-10-02.